the name of this unusual interlocking puzzle characterizes the necessary moves very typical, it is real a danse macabre of the pieces for the solution; especially the moves for the last 3 pieces aver very unusual and complete new for an interlocking puzzle

difficulty

the level of 1.1.1.3 describes only the solution up to the last 3 pieces, then you have to find a minimum of 7 more unsusual steps to dismantle these pieces completely